ОЧЕНЬ С РЕШЕНИЕМ ПОДРОБНЫМ

Я тоже делала это задание вот ответы на все примеры:

1) 25 * 76 * 4 = 25 * ( 76 * 4 ) = ( 25 * 4 ) * 76 = 7 600
2) 50 * 43 * 20 = 50 * ( 43 * 20 ) = ( 50 * 20 ) * 43 = 43 000
3) 8 * 30 * 125 = 8 * ( 30 * 125 ) = ( 8 * 125 ) * 30 = 30 000
4) 200 * 32 * 5 = 200 * ( 32 * 5 ) = ( 200 * 5 ) * 32 = 32 000
5) 125 * 57 * 8 = 125 * ( 57 * 8 ) = ( 125 * 8 ) * 57 = 57 000
6) 40 * 49 * 25 = 40 * ( 49 * 25 ) = ( 40 * 25 ) * 49 = 49 000
7) 25 * 83 * 4 = 25 * ( 83 * 4 ) = ( 25 * 4 ) * 83 = 8 300
8) 20 * 94 * 5 = 20 * ( 94 * 5 ) = ( 20 * 5 ) * 94 = 9 400
9) 20 * 77 * 50 = 20 * ( 77 * 50 ) = ( 20 * 50 ) * 77 = 77 000
10) 80 * 63 * 125 = 80 * ( 63 * 125 ) = ( 80 * 125 ) * 63 = 630 000
11) 16 * 40 * 5 = 16 * ( 40 * 5 ) = ( 16 * 5 ) * 40 = 3 200

1/4+х : 3 5/9=7/16
х :32/9=7/16 - 1/4
х : 32/9=7/16 - 4/16
х : 32/9=3/16
х=3/16 * 32/9
х=2/3

4 2/5 : х - 2 3/5=7/16
22/5 :х=7/16+2 3/5
22/5 :х=35/80+2 48/80
22/5 : х=3 3/80
х=22/5 : 3 3/80
х=22/5 * 80/243
х=352/243=1 109/243

3 1/3 :(2 1/8 - х)=2 2/9
2 1/8 - х=3 1/3 : 2 2/9
2 1/8 - х=10/9 * 9/20
2 1/8 - х=1/2
х=2 1/8 - 1/2
х=2 1/8 - 4/8
х=3 5/8

(5/12+1/2 х):2 1/2=11/12
5/12+1/2 х=11/12 * 2 1/2
5/12+1/2 х=11/12 * 5/2
5/12+1/2 х=55/24=2 7/24
1/2 х=2 7/24 - 5/12
1/2 х=2 7/24 - 10/24
1/2 х= 1 21/24
х=1 21/24 :1/2
х=45/24 * 2
х=45/12
х=3 3/4